<a href="http://github.com/angular/angular.js/tree/v1.2.10/src/Angular.js#L669" class="view-source btn btn-action"><i class="icon-zoom-in"> </i> View source</a><a href="http://github.com/angular/angular.js/edit/master/src/Angular.js" class="improve-docs btn btn-primary"><i class="icon-edit"> </i> Improve this doc</a><h1><code ng:non-bindable="">angular.copy</code>
<div><span class="hint">API in module <code ng:non-bindable="">ng</code>
</span>
</div>
</h1>
<div><h2 id="description">Description</h2>
<div class="description"><div class="angular-copy-page"><p>Creates a deep copy of <code>source</code>, which should be an object or an array.</p>
<ul>
<li>If no destination is supplied, a copy of the object or array is created.</li>
<li>If a destination is provided, all of its elements (for array) or properties (for objects)
are deleted and then all elements/properties from the source are copied to it.</li>
<li>If <code>source</code> is not an object or array (inc. <code>null</code> and <code>undefined</code>), <code>source</code> is returned.</li>
<li>If <code>source</code> is identical to &#39;destination&#39; an exception will be thrown.</li>
</ul>
</div></div>
<h2 id="usage">Usage</h2>
<div class="usage"><pre class="prettyprint linenums">angular.copy(source[, destination]);</pre>
<h4 id="usage_parameters">Parameters</h4><table class="variables-matrix table table-bordered table-striped"><thead><tr><th>Param</th><th>Type</th><th>Details</th></tr></thead><tbody><tr><td>source</td><td><a href="" class="label type-hint type-hint-object">*</a></td><td><div class="angular-copy-page"><p>The source that will be used to make a copy.
Can be any type, including primitives, <code>null</code>, and <code>undefined</code>.</p>
</div></td></tr><tr><td>destination <div><em>(optional)</em></div></td><td><a href="" class="label type-hint type-hint-object">Object</a><a href="" class="label type-hint type-hint-array">Array</a></td><td><div class="angular-copy-page"><p>Destination into which the source is copied. If
provided, must be of the same type as <code>source</code>.</p>
</div></td></tr></tbody></table><h4 id="usage_returns">Returns</h4><table class="variables-matrix"><tr><td><a href="" class="label type-hint type-hint-object">*</a></td><td><div class="angular-copy-page"><p>The copy or updated <code>destination</code>, if <code>destination</code> was specified.</p>
</div></td></tr></table></div>
<h2 id="example">Example</h2>
<div class="example"><div class="angular-copy-page"><h4 id="example_source">Source</h4>
<div source-edit="" source-edit-deps="angular.js script.js" source-edit-html="index.html" source-edit-css="" source-edit-js="script.js" source-edit-json="" source-edit-unit="" source-edit-scenario="" source-edit-protractor=""></div>
<div class="tabbable"><div class="tab-pane" title="index.html">
<pre class="prettyprint linenums" ng-set-text="index.html" ng-html-wrap=" angular.js script.js"></pre>
<script type="text/ng-template" id="index.html">
<div ng-controller="Controller">
<form novalidate class="simple-form">
Name: <input type="text" ng-model="user.name" /><br />
E-mail: <input type="email" ng-model="user.email" /><br />
Gender: <input type="radio" ng-model="user.gender" value="male" />male
<input type="radio" ng-model="user.gender" value="female" />female<br />
<button ng-click="reset()">RESET</button>
<button ng-click="update(user)">SAVE</button>
</form>
<pre>form = {{user | json}}</pre>
<pre>master = {{master | json}}</pre>
</div>


</script>
</div>
<div class="tab-pane" title="script.js">
<pre class="prettyprint linenums" ng-set-text="script.js"></pre>
<script type="text/ng-template" id="script.js">
function Controller($scope) {
   $scope.master= {};

   $scope.update = function(user) {
     // Example with 1 argument
     $scope.master= angular.copy(user);
   };

   $scope.reset = function() {
     // Example with 2 arguments
     angular.copy($scope.master, $scope.user);
   };

   $scope.reset();
 }
</script>
</div>
</div><h4 id="example_demo">Demo</h4>
<div class="well doc-example-live animate-container" ng-embed-app="" ng-set-html="index.html" ng-eval-javascript="script.js"></div>
</div></div>
</div>
